SORBENT FOR SEPARATING HEAVY METAL IONS FROM DRINKING WATER AND A METHOD FOR PREPARATION THEREOF

摘要

FIELD: water treatment.;SUBSTANCE: sorbent according to invention represents dispersion of ferric and ferrous hydroxides and a bivalent metal hydroxide, the latter, in particular, being magnesium hydroxide at magnesium-to-iron molar ratio between 1:2 and 1;2.2. Preparation of sorbent consists in coprecipitation of bivalent metal and ferric hydroxides at pH 10-11 followed by filtration (formation of precipitate), drying, granulation, and heat treatment of precipitate at 210-270°C.;EFFECT: increased heavy metal sorption capacity.;2 cl, 5 tbl, 6 ex